Analysis Of The D-Link Airplus G DI-524

The D-Link AirPlus G DI-524 High-Speed Wireless Router is an 802.11g high-performance, wireless router that supports high-speed wireless networking at home, at work or in public places. Unlike most routers, the DI-524 provides data transfers at up to 108 Mbps (compared to the standard 54 Mbps) when used with other D-Link AirPlus G products. The 802.11g standard is backwards compatible with 802.11b products. This means that you do not need to change your entire network to maintain connectivity. You may sacrifice some of 802.11g’s speed when you mix 802.11b and 802.11g devices, but you will not lose the ability to communicate when you incorporate the 802.11g standard into your 802.11b network. You may choose to slowly change your network by
When used with other 802.11g WPA (WiFi Protected Access) and 802.1x compatible products in a network with a RADIUS server, the security features include:The multihop wireless environment is characterized by harsh propagation channels, interference, frequent and rapid changes in network topology, a lack of centralized network control, and the requirement of multihop communication from source to destination.Many of present wireless network applications will require that mission-critical data should be guaranteed to be delivered to their corresponding targets in time. However, end-to-end QoS (Quality of Service) assurance in multihop networks is a very challenging topic [1][2].For home users that will not incorporate a RADIUS server in their network, the security for the DI-524, used in conjunction with other 802.11g products, will still be much stronger than ever before. Utilizing the Pre Shared Key mode of WPA, the DI-524 will obtain a new security key every time it connects to the 802.11g network. You only need to input your encryption information once in the configuration menu. No longer will you have to manually input a new WEP key frequently to ensure security, with the DI-524, you will automatically receive a new key every time you connect, vastly increasing the safety of your
Different from IEEE 802.11 where a station can transmit only one frame after winning the channel, the TXOP scheme allows a station gaining the channel to transmit the frames available in its buffer successively provided that the duration of transmission does not exceed a certain threshold, namely the TXOP limit. As shown in Fig. 3, each frame is acknowledged by an ACK after a SIFS interval. The next frame is transmitted immediately after it waits for an SIFS upon receiving this ACK. If the transmission of any frame fails the burst is terminated and the station contends again for the channel to retransmit the failed frame. To mitigate the impact of the overheads and improve the system efficiency, the scheme has been proposed in the IEEE 802.11g protocol. Different from IEEE 802.11 where a station can transmit only one frame after winning the channel, the TXOP scheme allows a station gaining the channel to transmit the frames available in its buffer successively provided that the duration of transmission does not exceed a certain threshold, namely the limit. As shown in Fig. 1 each frame is acknowledged by an ACK after a SIFS interval. The next frame is transmitted immediately after it waits for an SIFS upon receiving this ACK. If the transmission of any frame fails the burst is terminated and the station contends again for the channel to